/*******************************************************************************
 * Copyright (c) 2006 CEA List.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     CEA List - initial API and implementation
 *******************************************************************************/
package com.cea.papyrus.tabbedproperties.section;

import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage;

import com.cea.papyrus.core.editpart.IUMLElementEditPart;
import com.cea.papyrus.core.tabbedproperties.PropertyViewSection;
import com.cea.papyrus.tabbedproperties.composites.MethodsComposite;
import com.cea.papyrus.tabbedproperties.composites.ParametersComposite;
import com.cea.papyrus.umlutils.Element;

/**
 * Section for Operation to define Parameters
 */
public class OperationParametersSection extends PropertyViewSection {

	/** Composite to describe the parameter of the element*/
	private ParametersComposite paramsComposite;

	/** Composite to describe the methods of the element */
	private MethodsComposite methodsComposite;

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void createControls(Composite parent,
			TabbedPropertySheetPage tabbedPropertySheetPage) {
		super.createControls(parent, tabbedPropertySheetPage);
		// set a grid Layout
		GridLayout layout = new GridLayout();
		layout.numColumns = 2;
		layout.makeColumnsEqualWidth = true;
		layout.marginWidth = 0; // remove additional spaces
		layout.marginHeight = 0; // remove additional spaces
		parent.setLayout(layout);

		GridData data = new GridData();
		data.grabExcessHorizontalSpace = true;
		data.horizontalAlignment = SWT.FILL;

		// table for Parameters
		paramsComposite = new ParametersComposite();
		paramsComposite.createContent(parent, tabbedPropertySheetPage.getWidgetFactory());
		paramsComposite.setLayoutData(data);

		// table for Methods
		methodsComposite = new MethodsComposite();
		methodsComposite.createContent(parent, tabbedPropertySheetPage);
		methodsComposite.setLayoutData(data);
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void refresh() {
		paramsComposite.refresh();
		methodsComposite.refresh();
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void setInput(IWorkbenchPart part, ISelection selection) {
		super.setInput(part, selection);
		Assert.isTrue(selection instanceof IStructuredSelection);
		Object input = ((IStructuredSelection) selection).getFirstElement();
		if (input instanceof IUMLElementEditPart) {
			org.eclipse.uml2.uml.Element element = ((IUMLElementEditPart) input).getUmlElement();
			if(element instanceof org.eclipse.uml2.uml.BehavioralFeature) {
				Element utilElement = new Element((org.eclipse.uml2.uml.BehavioralFeature)element);
				paramsComposite.setElement(utilElement);
				methodsComposite.setElement(utilElement);
			}
		}
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void dispose(){
		if(paramsComposite!=null) {
			paramsComposite.dispose();
		}
		if(methodsComposite!=null) {
			methodsComposite.dispose();
		}
		super.dispose();
	}
}

